Light Emitting Module Terminal Layout for Stable Signal Timing
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Solution Overview
Problem
Existing light emitting devices face challenges in stable operation due to signal delays and layout inefficiencies, particularly when terminals and processing circuits are aligned in a direction that increases the distance between them, leading to potential deviations in signal timing and reduced manufacturing efficiency.
Innovation Solution
The arrangement of terminals and processing circuits in a longitudinal direction with adjacent terminals receiving clock and data signals, along with optimizing signal transitions and reducing wiring length differences, stabilizes the operation and enhances manufacturing efficiency by minimizing signal delays and layout area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If terminals and processing circuit are aligned in one direction for miniaturization, then device area is reduced, but signal delay increases
Solution Approach 1:
The patent transitions from one-dimensional linear alignment of terminals and processing circuit to a two-dimensional layout where terminals are arranged in a row and the processing circuit is positioned adjacent to multiple terminals. This dimensional change allows simultaneous reduction of device area and minimization of signal delay by providing multiple short signal paths instead of one long path.
Solution Approach 2:
The processing circuit is positioned with different distances to different terminals based on their specific signal requirements. Terminals requiring faster signal response are placed closer to the processing circuit, while less time-critical terminals can be positioned further away. This local optimization of spatial arrangement resolves the contradiction between compactness and signal delay.
2Productivity
If terminals are arranged in longitudinal direction for compact layout, then manufacturing efficiency increases, but signal timing stability deteriorates
Solution Approach 1:
The patent positions terminals at equivalent distances from the processing circuit along the longitudinal direction, creating equipotential signal paths. This ensures that signals traveling to different terminals experience comparable delay, maintaining timing stability while achieving compact layout for improved manufacturing efficiency.
Solution Approach 2:
The processing circuit is designed with asymmetric terminal connections where different terminals have optimized path lengths based on their specific timing requirements. This asymmetric arrangement within the symmetric longitudinal layout allows fine-tuning of signal timing while maintaining overall compactness.
Data Source
AI summary
A light emitting device is provided that includes a substrate with a light emitting region in which light emitting elements are arranged, the light emitting region extending in a longitudinal direction; a processor configured to process a data signal for controlling the light emitting elements in accordance with a clock signal; and terminals aligned in the longitudinal direction. The terminals include a first terminal, a second terminal, and a third terminal. The second terminal and the third terminal are arranged adjacent to each other. The processor and the terminals are arranged in the longitudinal direction. The second terminal is supplied with one of the clock signal and the data signal. The third terminal is supplied with one of another clock signal and data signal.